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<H1>First octet of the SMS-SUBMIT PDU</H1>The first octet of the SMS-SUBMIT PDU 
has the following layout: <BR><BR>
<TABLE border=1>
  <TBODY>
  <TR bgColor=#ffffcc>
    <TH>Bit no</TH>
    <TD>7</TD>
    <TD>6</TD>
    <TD>5</TD>
    <TD>4</TD>
    <TD>3</TD>
    <TD>2</TD>
    <TD>1</TD>
    <TD>0</TD></TR>
  <TR>
    <TH>Name</TH>
    <TD>TP-RP</TD>
    <TD>TP-UDHI</TD>
    <TD>TP-SRR</TD>
    <TD>TP-VPF</TD>
    <TD>TP-VPF</TD>
    <TD>TP-RD</TD>
    <TD>TP-MTI</TD>
    <TD>TP-MTI</TD></TR></TBODY></TABLE><BR>where the fields have the following 
meaning: <BR><BR>
<TABLE border=1>
  <TBODY>
  <TR bgColor=#ffffcc>
    <TH>Fieldname</TH>
    <TH>Meaning</TH></TR>
  <TR>
    <TD>TP-RP</TD>
    <TD>Reply path. Parameter indicating that reply path exists. </TD></TR>
  <TR>
    <TD>TP-UDHI</TD>
    <TD>User data header indicator. This bit is set to 1 if the User Data 
      field starts with a header </TD></TR>
  <TR>
    <TD>TP-SRR</TD>
    <TD>Status report request. This bit is set to 1 if a status report is 
      requested</TD></TR>
  <TR>
    <TD>TP-VPF</TD>
    <TD>Validity Period Format. Bit4 and Bit3 specify the <A 
      href="http://www.dreamfabric.com/sms/vp.html">TP-VP</A> field according to 
      this table: <BR><B>bit4 bit3</B><BR>0 0 : TP-VP field not present<BR>1 0 : 
      TP-VP field present. Relative format (one octet)<BR>0 1 : TP-VP field 
      present. Enhanced format (7 octets)<BR>1 1 : TP-VP field present. Absolute 
      format (7 octets)</TD></TR>
  <TR>
    <TD>TP-RD</TD>
    <TD>Reject duplicates. Parameter indicating whether or not the SC shall 
      accept an SMS-SUBMIT for an SM still held in the SC which has the same 
      TP-MR and the same TP-DA as a previously submitted SM from the same 
  OA.</TD></TR>
  <TR>
    <TD>TP-MTI</TD>
    <TD>Message type indicator. Bits no 1 and 0 are set to 0 and 1 
      respectively to indicate that this PDU is an SMS-SUBMIT 
</TR></TBODY></TABLE><BR>
<H3>Example</H3>A first octet of "11" (hex) has the following meaning: <BR><BR>
<TABLE border=1>
  <TBODY>
  <TR bgColor=#ffffcc>
    <TH>Bit no</TH>
    <TD>7</TD>
    <TD>6</TD>
    <TD>5</TD>
    <TD>4</TD>
    <TD>3</TD>
    <TD>2</TD>
    <TD>1</TD>
    <TD>0</TD></TR>
  <TR>
    <TH>Name</TH>
    <TD>TP-RP</TD>
    <TD>TP-UDHI</TD>
    <TD>TP-SRR</TD>
    <TD>TP-VPF</TD>
    <TD>TP-VPF</TD>
    <TD>TP-RD</TD>
    <TD>TP-MTI</TD>
    <TD>TP-MTI</TD></TR>
  <TR>
    <TH>Value</TH>
    <TD>0</TD>
    <TD>0</TD>
    <TD>0</TD>
    <TD>1</TD>
    <TD>0</TD>
    <TD>0</TD>
    <TD>0</TD>
    <TD>1</TD></TR></TBODY></TABLE></BODY></HTML>
